How fast is the van traveling relative to the ground

According to Newton’s first law of motion, an object at rest will begin to move, when an unbalanced force acts upon it.

option B is the correct answer.

Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue in motion with a constant velocity unless acted upon by an external force.

In other words, an object will maintain its state of motion (whether it is at rest or moving in a straight line at a constant speed) unless a force acts upon it.

Thus, according to Newton’s first law of motion, an object at rest will begin to move, when an unbalanced force acts upon it.

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Answer:

its B

Explanation:

At the lowest point in the dip, the normal force of the track pushing up on you is greater than mg because there must be a net upward force.

Your apparent weight at the bottom of the dip will be doubled when your speed is 14 m/s.

A) When the roller coaster car is at the lowest point in the dip, it is moving in a circle. In order to keep moving in a circle, there must be a net force acting on the car in the direction of the center of the circle.

This force is called the centripetal force. The centripetal force is provided by the normal force of the track pushing up on the car.

The centripetal force is equal to the mass of the car multiplied by its velocity squared divided by the radius of the circle.

F = mv^2 / r

where:

F is the centripetal force (in N)

m is the mass of the car (in kg)

v is the velocity of the car (in m/s)

r is the radius of the circle (in m)

At the bottom of the dip, the velocity of the car is at its maximum. This means that the centripetal force must also be at its maximum. The only way for the centripetal force to be at its maximum is if the normal force is greater than mg.

B) The apparent weight of an object is equal to the normal force acting on the object. When the roller coaster car is at the bottom of the dip, the normal force is greater than mg. This means that the apparent weight of the car is greater than its actual weight.

The apparent weight of the car will be doubled when the centripetal force is equal to twice the weight of the car. This occurs when the velocity of the car is equal to the square root of twice the acceleration due to gravity times the radius of the circle.

v = sqrt(2 * g * r)

where:

v is the velocity of the car (in m/s)

g is the acceleration due to gravity (9.8 m/s²)

r is the radius of the circle (in m)

Substituting the values for g and r, we get:

v = sqrt(2 * 9.8 m/s² * 65 m) = 14 m/s

Therefore, your apparent weight at the bottom of the dip will be doubled when your speed is 14 m/s.

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Answer:

No

Explanation:

Your answer will be no because Mars has less gravity then Earth does but you would still have the same amount of mass therefor If someone goes to Mars and goes back to Earth they would not weigh the same as they did on earth.Hope it helps you!

The best way to summarise the key results in a lab guide is by representing them through diagrams.

The important findings in a lab report are those that confirm or refute the working theories. Furthermore, other findings that are crucial to understanding the processes and/or mechanisms explored in the experiment may also be among the significant findings. The best way to summarise these results is by presenting them through diagrams o graphical presentation.

Key outcomes in an experiment can be findings that serve as stepping stones toward the trial's conclusion or findings that may not directly relate to the experiment itself but are nonetheless crucial to its success. A significant finding in an experiment is one that determines whether a hypothesis is accepted or rejected.

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The value of RN and T can be found graphically by plotting the relationship between the two variables.The value of RN and T can also be found algebraically.

Variables are used in programming to store information or data. They are typically used to store values that may change over the course of the program's execution. Variables can be assigned different data types such as strings, integers, booleans, or other complex data types such as objects or arrays. Variables are typically declared with a type and a name, and are assigned a value. Variables can also be assigned values from user input, such as from a form or a text field. Variables are important because they allow the programmer to store and manipulate data. This can help the programmer create more efficient and complex programs.

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Answer:

Explanation:

we know that 1 km =1000 m and 1 hour=3600 sec

therefore

15 km/hr=15*1000 m/3600 sec=4.167 m/s

Answer:

Spectrum because it could respond to a specific color based upon how you humans typically perceive Lights of the wavelength

Answer:

spectrum

Explanation:

nesecitabas ayuda hace 1 hora, todavia la nesecitas?

Answer: 48 mph

Explanation: 48*2.5=120

Answer:

14 x 98/12+13-8 = 119.33..

the .33.. is a repeating decimal

Sin is the vertical component. So multiply sin 30 and 14. BOOM! You got the answer.

\( \sin(30) \times 14 \: = 7\)

Answer:

the same

Explanation:

if that is what you are asking

Answer:

c Like/same signs

Explanation:

A repelling force occurs between two or more charged objects with the charges are of like or same sign.

Therefore, repulsion occurs when like charges are brought close to each other.

The answer is time for this trip would elapse on a clock on board the spaceship is \(1.02 \times 10^{8} secends\)

\(V_{0}=0.800 \mathrm{C}\)

Distance from Earth (x)=4.30 light-years

Time req. to do in earth frame of reference \($=\frac{4.30 \text { light years }}{0.800 \mathrm{c}}$\)

\($=\frac{4.3 \times 9.46 \times 10^{15} \mathrm{M}}{0.8 \times 3 \times 10^{8} \mathrm{~m} / \mathrm{s}}$\)

\($=1.695 \times 10^{8}$\) seconds

proper time  = Time in earth's reference\($\sqrt{1-\frac{v^{2}}{C^{2}}}$\)

\(=1.698 \times 10^{8} \times 0.6=1.02 \times 10^{8} secends\)

What is Space contraction?

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The magnitude scale in astronomy is logarithmic, which means that for every 1 unit increase in magnitude, the brightness decreases by a factor of approximately 2.512 (approximately 2.5).

Given that the +6.0 magnitude star appears 2.5 times brighter than the +3.0 magnitude star, we can calculate the difference in magnitudes between them:
Magnitude difference = 6.0 - 3.0 = 3.0
Since each magnitude unit represents a factor of 2.512 change in brightness, the ratio of the brightness between the two stars can be determined as:

Brightness ratio = 2.512^(magnitude difference) = 2.512^3.0 ≈ 15.85
Therefore, the +6.0 magnitude star is approximately 15.85 times brighter than the +3.0 magnitude star.

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The voltage across the bigger resistor, given the size, is 2/3 of the battery voltage.

Assuming the battery voltage is V. Also assuming the smaller resistor has the resistance, R, it means the bigger resistor would have the resistance of 2 R.

The current will be the same for both resistors and will be V / ( R + 2 R ) =  V / 3 R.

The voltage for the smaller resistor is therefore:

IR = V / 3 R x R

= V / 3

The voltage across the bigger resistor is V - V / 3 = 2 V / 3. This is 2 / 3 of the battery voltage.

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The voltage across the bigger resistor (R) is (2 V_B ) / 3.

The voltage across the bigger resistor is calculated by applying Ohm's law as shown below;

V = IR

where;

Since the two resistors are in series, the equivalent resistance is calculated as follows;

Re = R + R/2

Re = 3R/2

The current flowing in the circuit is calculated as follows;

I = V_B/Re

I = ( V_B ) x 2/3R

The voltage across the bigger resistor (R) is calculated as follows;

V' = IR

V' =  ( V_B) x 2/3R  x R

V' = (2V_B) / 3

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Answer:

A  it is still at the same passe and it is going back down

Explanation:

Answer:

The correct answer to your question is A. The object is moving at a constant, negative, velocity. It is negative because it is moving back towards the origin.

Explanation:

The bicyclist traveled 10 meters in the air before hitting the building

We can get the above answers by following the steps below

Firstly we have to assume there are no external forces acting on the cyclist other than gravity.

When the bicyclist is about to hit the building, all kinetic energy will be converted into potential energy because of the height at which the cyclist is.

Therefore, we can equate the initial kinetic energy of the bicyclist to the potential energy at the highest point of their trajectory

Given

KE = PE

1/2 *m*v² = m*g*h

where m is the mass of the bicyclist (40 kg), v is their initial velocity before being hit, g is the acceleration due to gravity, and h is the height

Since we need to find h, we should isolate it by. Since the initial velocity isn't directly mentioned,we can assume the value to be 13.9

h = (1/2 * v²)/g

h = (1/2 * 13.9²)/9.81

h ≈ 10 meters

Therefore, the bicyclist traveled approximately 10 meters into the air before hitting the building.

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Answer: Gravity creates stars and planets by pulling together the material from which they are made.

Explanation:

Gravity is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. The gravitational pull of the moon pulls the seas towards it, causing ocean tides.

Answer: 1. It always acts in the direction opposite to the direction of motion. 2. It's magnitude is equal to that of the force trying to set the object in motion only until it starts to move.

Explanation: Properties of frictional forces:

1. Frictional force always acts parallel to two planes in contact with each other and in a direction opposite to that of relative motion of the two bodies. 2. Frictional forces are caused due to intermolecular interactions between the bodies.

Explanation:

force is a force between two surfaces that are sibling

1. it acts parrell

2. it is caused due to intermolecular interactions between two bodies

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The process of learning is a complex and multi-faceted activity that involves numerous factors such as motivation, attention, memory, and problem-solving.

One of the key components of effective learning is the ability to manage one's own cognitive processes or metacognition. Metacognition refers to an individual's awareness and understanding of their own thinking processes and strategies, as well as their ability to monitor and regulate their own learning.

Effective metacognitive strategies include setting goals, planning and organizing information, monitoring one's own comprehension, and evaluating learning outcomes.

These strategies can be taught and learned, and they can significantly enhance learning and academic performance.

Additionally, metacognitive strategies can help learners to identify and address areas of weakness or challenge, such as difficulties with attention or memory, and develop more effective learning strategies to compensate.

In summary, metacognition is an essential component of effective learning. By developing awareness and control of their own thinking processes, learners can improve their academic performance, identify and address areas of challenge, and become more effective and efficient learners.

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Answer:

there is no drag in a vacuum (why is father in a vaccum)

Explanation:

there is nothing to hit and slow the object other than gravity like dust or air

Answer:(d) mass

Explanation: The kilogram is the standard mass unit that is used almost globally and is the SI unit of mass. The kilogram weighs 9.8 Newtons under normal conditions on the surface of the Earth, and Newton is the corresponding SI unit of force and weight.

Empirical  probability requires that you count the frequency that an event occurs through an experiment and calculate the probability from the experiment's relative frequency distribution.

Empirical probability, also known as experimental probability, requires counting the frequency that an event occurs through an experiment and calculating the probability from the experiment's relative frequency distribution. It is based on observed data and can be used when conducting experiments or collecting real-world data.

To calculate the empirical probability of an event, you would divide the number of times the event occurred by the total number of trials or observations. This gives you the relative frequency of the event, which can be interpreted as an estimate of the probability.

Empirical probability is particularly useful when dealing with situations where theoretical probabilities are difficult to determine or when there is limited information available. By conducting experiments and collecting data, empirical probability allows for an estimation of the likelihood of an event based on observed frequencies.

It's important to note that as the number of trials or observations increases, the empirical probability tends to converge toward the theoretical probability. This concept is known as the law of large numbers, which states that as the sample size increases, the relative frequency of an event approaches its actual probability.

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Global Positioning System (GPS) is a satellite-based tracking system that enables users to determine a person's position.

This system is used to locate and track the movements of individuals, vehicles, and assets around the world. GPS technology works by utilizing a network of satellites orbiting the Earth that send signals to GPS receivers on the ground. These receivers interpret the signals and calculate the user's precise location, speed, and direction.

GPS technology has a wide range of applications, including navigation, tracking, and mapping. GPS tracking is particularly useful in fleet management, logistics, and emergency response situations. Law enforcement agencies also use GPS technology to monitor the movements of individuals who are under surveillance or subject to electronic monitoring.

GPS technology has revolutionized the way people navigate and interact with the world around them. It has made it easier for individuals to find their way around unfamiliar places and has improved the efficiency and safety of many industries. The widespread availability of GPS technology has also led to the development of new applications and services that make use of location data, such as geotagging and location-based advertising. Overall, GPS technology has had a significant impact on society and will continue to play an important role in shaping the future.

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Answer:

480 Ohms for the calculations

Explanation:

For the calculations:

V = 120 and I = 0.25

V = IR

R = V/I

R = 120/0.25

R = 480 Ohms

For the sentences, I am so sorry, I do not have them yet!

I. The resistance which is needed to generate a current of 0.25 Ampere in the ceiling fan is 480 Ohms.

II. Since current is inversely proportional to the resistance in the electrical circuit, an increase in the current (larger currents) flowing into the electrical circuit of the ceiling fan would cause the resistance to decrease in magnitude at medium and high speeds.

Given the following data:

To calculate the resistance needed to generate that current, we would apply Ohm's law:

Ohm's law states that at constant temperature, the current flowing through an electrical circuit is directly proportional to the voltage (potential difference) applied across the two terminals of the electrical circuit and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

\(V=IR\)

Where;

Making R the subject of formula, we have:

\(R =\frac{V}{I}\)

Substituting the given parameters into the formula, we have;

\(R=\frac{120}{0.25}\)

Resistance, R = 480 Ohms

Since current is inversely proportional to the resistance in the electrical circuit, an increase in the current (larger currents) flowing into the electrical circuit of the ceiling fan would cause the resistance to decrease in magnitude at medium and high speeds.

In conclusion, the larger the current, the lower the resistance would be at both medium and high speeds.

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The acceleration of the car in front before stopping is 6.94 m/s².

The acceleration of the car is the rate of change of velocity of the car with time.

The acceleration of the car in front is determined by applying the Newton's second law of motion assuming the car decelerated at a constant rate before stopping.

Ff = F

μmg = ma

μg = a

where;

Substitute the given parameters and solve for the acceleration of the car.

a = (0.708) x (9.8 m/s²)

a = 6.94 m/s²

Thus, the acceleration of the car in front before stopping is 6.94 m/s².

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Answer:

It has several other objects in its orbit, though few are as massive as itself."

Answer:

Bacteria

Explanation:

UV kills bacteria and its 8 letters